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Protein Structure


This quiz is based on the various aspects of the structure of protein molecules and amino acids.

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Multiple choice

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1.

The sequence of different amino acids in the polypeptide chain of a protein is called its :

  secondary structure

  primary structure

  tertiary structure

  Quaternary structure

  Half-n-half Clue
 

2.

Infectious self-reproducing agents consisting only of protein, with no nucleic acids (hypothesized in 1982 by Nobel Laureate Stanley B. Prusiner) are called :

  Prions

  exteins

  proteinoids

  proteomes

  Half-n-half Clue
 

3.

Which of the following is not an aromatic amino acid ?

  Serine

  Phenylalanine

  Tyrosine

  Tryptophan

  Half-n-half Clue
 

4.

Successive amino acids in the polypeptide chains that make up a protein are held together by :

  phosphodiester bonds

  interprotamine disulfide bonds

  N-glycosidic bonds

  peptide bonds

  Half-n-half Clue
 

5.

Which of the following amino acids is polar ?

  Leucine

  Histidine

  Valine

  Isoleucine

  Half-n-half Clue
 

6.

Which of the following is not a type of protein secondary structure ?

  á-helix

  third level folding to form small globules

  â-pleated sheet

  Turns

  Half-n-half Clue
 

7.

How many different amino acids are found in proteins ?

  20

  27

  30

  infinite

  Half-n-half Clue
 


 
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